Richey Chretien Telescope

[adamsp123]

Maybe a silly question but can anyone explain the appeal of this type of scope for imaging?

Cheers Pete

[riklaunim]

Long focal length and very flat field makes them ideal for widefield imaging of galaxies, smaller nebulas etc. Google for AT8RC or GSO 8 RC in Google Images

[martin_h]

Take a lookat these bad boys!

RCOS :: Telescopes Overview

[Eddie]

Long focal length and very flat field makes them ideal for widefield imaging of galaxies, smaller nebulas etc. Google for AT8RC or GSO 8 RC in Google Images

Actually the one thing the RC does have is field curvature, while the field is larger and flatter than a SCT they still do need a corrector to correct for the curvature on bigger sensors (35mm sizes and up). They are completely free from Coma, Spherical Aberration and Chromatic Aberration. Another big advantage is the small spot size, on and off axis.

Eddie

[adamsp123]

Cheers for the replies, I just thought at F/8 they seemed a bit slow but they have their place, "horses for courses" I suppose.